8.1.2 Failure information and code
In case the unit runs under abnormal condition, failure
protection code will display on both control panel and wired
controller, and the indicator on the wired controller will flash
with 5Hz. The display codes are shown in the following table:
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
EA
Eb
EC
Ed
EF
P0
P1
P2
P3
P4
P5
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Code
Reason
Water flow detection error (The third time)
Power phase sequence error
Communication error
Total water outlet temperature sensor error
Pipe temperature sensor in condenser A error
Pipe temperature sensor in condenser B error
Outdoor ambient temperature sensor error or power supply protection
Low pressure protection System A
Low pressure protection System B
High pressure or air discharge temperature protection in system B
Current protection in system A
Current protection in system B
Condenser high temperature protection in system A
Condenser high temperature protection in system B
System freeze-proof protection
(Reserved failure code)
(Reserved failure code)
Wire control did not found out any on-line module unit.
(Reserved failure code)
Water flow detection error (The first and second times)
High pressure or air discharge temperature protection error in system A
Main unit detect that auxiliary unit’s quantity have decreased.
Freeze-proof temperature sensor 1 in heat exchanger error
Outlet water temperature sensor in heat exchanger error
P6
P7
P8
Pb
Low ambient temperature drive-up protection
PA
PC
PE
1-hour consecutive 3-times PE protection
Inlet water temperature sensor error
P9
Protection of outlet and inlet water temperature difference
Low-temperature protection of heat exchanger
F1
F2
Wire controller failure
29
30
31
(Reserved failure code)
8.1.3 Ordinary displayed data
a. Ordinary displayed data are displayed in all display pages.
b. If the unit system is under running state, i.e. one or more than
one modular unit is under running operation, there will be a
dynamic display of . If the system is under OFF state,
there is no display.
c. If the communication with the main unit modular unit is
normal, it displays . There will be no display under the
failure state of main unit communication connection.
d. If it is under the host computer network control,
Network ON
Network ON
displays, otherwise there is no display.
e. If it is under wired controller locked or button locked state, it
displays the lock mark. There will be no display after the lock
is unlocked.
8.1.4 Treatment of display data
The data display area is divided into Up area and Down area,
with two groups of two-digit half 7-segment digital display,
respectively.
a.Temperature display
Temperature display is used for displaying the total outlet water
temperature of unit system, outlet water temperature of heat
exchanger, condenser pipe temperature T3A of system A,
condenser pipe temperature T3B of system B, outdoor environ-
mental temperature T4, and setting temperature Ts, with
allowable data display scope -15
ć̚
70
ć
. If the temperature is
higher than 70
ć
, it is displayed as 70
ć
. If there is no effective
date, it displays “——” and indication point
ć
is on.
b. Current display
Current display is used for displaying modular unit system A
compressor current IA or system B compressor current IB, with
allowable display scope 0A~99A. If it is higher than 99A, it is
displayed as 99A. If there is no effective date, it displays “——”
and indication point
A
is on.
c. Load rate display
Load rate display is used for displaying the total load rate of unit
system or the modular unit system A compressor, with allowable
display scope 0%~100%; the load rate of the fixed speed
compressor is only 0% (shutdown) or 100%(startup).
d. Failure display
It is used for displaying the total failure warning date of unit or
that of modular unit, with failure display scope E0~EF, E
indicating failure, 0~F indicating failure code. “E-“ is displayed
when there is no failure and indication point
#
#
is on at the same
time.
e. Protection display
It is used for displaying the total system protection data of unit or
the system protection data of modular unit, with protection
display scope P0~PF, P indicating system protection, 0~F
indicating protection code. “P-“ is displayed when there is no
failure and indication point
#
#
is on at the same time.
f. Unit number display
It is used for displaying the address number of the currently
selected modular unit, with display scope 0~15 and indication
point
#
is on at the same time.
O&I manual
22
Table 8-1
Summary of Contents for ICHS-420KC-5
Page 33: ......
